The Impact of Stormwater Runoff on Nutrient Removal in Sand Columns

Abstract:

Mulch layer also assists filtration of pollutants mainly larger sediment particles in bioretention. The objective is to evaluate the efficiency of bioretention facilities in removing nitrogen and phosphorus by varying the types of mulch layers through sand column. 200 mm filter media cells consisted of river sand with composited fine and coarse sand. Three types of mulch layer wood chip, tea waste and coconut husk were applied at the top of the sand layer at 50 mm depth. Runoff was monitored and analyzed to measure nutrient concentration within six hours. Woodchip showed the highest capability in removing phosphorus by 60.3% as compared to tea wastes and coconut husk. Lower removal efficiency was seen for nitrogen for all mulch materials. Tea waste provides additional nitrogen in effluent concentration. Coconut husk has a potential to be applied as mulch materials based on its capability even wood chip was seen to be favorably materials.

• Periodical: Applied Mechanics and Materials (Volume 567)
• Pages: 155-160
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.567.155
• Online since: June 2014
• Authors: Takaijudin Husna*, Ab. Ghani Aminuddin, Zakaria Nor Azazi
• Keywords: Bioretention, Column Study, Mulch Materials, Nutrient Pollutants, Stormwater Runoff, Treatment Efficiency

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